Are Zone Changes Non-Disruptive

Ok, from the subject line you might think "Ofcourse they are!", but here is my scenario.

I'm currently working on a 6510 switch run FabOS 7.1.1 and have the following scenario;

Aliase1 - HOSTWWN

Aliase2 - TargetWWN1

Aliase3 - TargetWWN1, TargetWWN2

TargetWWN1 is the same WWN in both aliases.

Zone1 - Aliase1;Aliase2

Zone2 - Aliase1;Aliase3

I have Zone1 in my active configuration which contains Aliase1 and Aliase2 (HOSTWWN and TargetWWN1)

I would like to add Zone2 which contains Aliase1 and Aliase3 (HOSTWWN, TargetWWN1 and TargetWWN2) to my config.

I would then want to remove Zone1 from the config.

I would then want to activate the new configuration.

Will there be any disruption to communication between HOSTWWN and Target1WWN when the new config is activated, given that the HOSTWWN and TargetWWN1 are in the original zone (Zone1) and also in the new zone (Zone2)?